Heel-nailing machine



Nof ba L 3 Sheets-Sheet 1.

G. G. SMALL.

HEEL NAILING MAGHINE.

Patented Oct. 29, 1889.

WITNESS-E5- (No Model.) 3 sheets sheet O. G. SMALL.

HEEL NAILING MACHINE. N0. 413,973. Patented Oct. 29, 1889.

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" UNIT STATES PATENT OFFICE.

CHESTER C. SMALL, OF MALDEN, ASSIGNOR TO FREEBORN F. RAYMOND, 2D, OF NEWTON, MASSACHUSETTS.

HEEL-NAILINGI MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,973, dated October 29, 1889. Application filed April 19, 1887. Serial No. 235,317. (No model.)

To all whom it may concern.-

Be it known that I, CHESTER C. SMALL, of Malden, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a new and useful Im provement in Heel-Nailing Machin es, of which the following is' 'a-full, clear, and exact description, reference being had to the accom panying drawings, forming a part of this specification, in explaining its nature.

The invention relates to a heel-nailingmachine having a gang or group of implements which are used first as awls for puncturing or forming the nail-receiving holes in the heelblank, and then as drivers for driving a gang or group of nails fed to these holes intothe heel and soles of a boot or shoe to which the heel is attached. To accomplish this result it is necessary to employ a templet, and also mechanism for moving the gang or group of implements to two levelsfirst, to the lower level necessary in forming the holes in the heel-blank, and, second, to the higher level, when they are reciprocated to drive the fastening-nails. This of course is upon the supposition that the boot or shoe is presented to i the nailing devices with the sole uppermost. Of course if it. were presentedwith its sole lowermost these movements of the implements would be reversed.

The invention further relates to the combination of a gang or group of instruments adapted to be used first as awls and then as drivers with devices for compressing the heel-blank, and with devices for feeding nails to the templet-holes or to a position to be driven bythe implements when they act as drivers. I would further say that these devices may be automatic in their action-that is, that the compression of the heel-blank, feed of the nails, and the two reciproeations of the head carrying the gang or group of implements may be automatic-or the nai1-carrier may be moved .by hand. I have repre-' sented the machine as automatic.

further say that when a top lift is to be spanked it will be necessary to provide the head carrying the gang or group of combined awlsand drivers, preferably, with a period of rest. These movements, however, preferably I would are governed by a cam, and therefore can take placewhen desired and be of any re- .one of the cams for operating the same.

Fig. 3 is a viewin vertical central section illustrating a modified form of the invention. Figs. 4., 5, and 6 illustrate various positions of the puncturing and driving instruments in relation to the heel. Figs. 7 and 8 represent in plan, inverted, and in vertical section the construction of the top-lift-holding devices. Fig. 9 illustrates in elevation and in plan, inverted, one of the forms of the combined awl and driver. Fig; 10 in similar views illustrates another form of the combined awl and driver. Fig. 11 shows in like views still another form thereof. Fig. 12 is a view of the machine as represented in Fig. 2 in rear elevation.

A is the templet, which is represented as stationary.

B is alast or work-support. It is mounted upon the jack-spindle b, which is adapted to be moved upward by means of the toggle-head b, toggle b and lever 6 one end of which is connected with the toggle by a link 11 and the other end of which is connected with a cam b on the cam-shaft b O isa nail carrier. It is moved upon the templet by the cam 0 into and out of opera tive position, and is adapted to receive nails supplied to.it automatically from a naiL-making device. The construction thus far described is well known in the art and will be readily understood, and my improved construction is as follows:

D is a head carrying or supporting a plate d, which holds the puncturing and driving implements 01. These puncturing and driving instruments have an end 11 somewhat reduced in size, and which may be conical, as: represented in Fig. 9, or oval-shaped, as repre- 10o sented in Fig. 11, or star-shaped, as represented in Fig. 10, or of any other form or shape to enable the implement to be forced into the stock of the heel; but of course the points cannot be sharp, like those of the ordinary awl. They must be of a size sufiicient to enable them to penetrate and at the same time have a head or surface for driving the fastenings.

The head D is reciprocated by means of the cams D D which are connected wit-h the head D by means of the cam-pins d The cams are carried by the shaft d which is rotated by the shaft b with which it is connected by the bevel-gear (Z d. The cams are timed to move the block D downward sufficiently to cause the implements d to be forced through the holes of the templet into the stock of the heel any desired distance to form the necessary holes for the reception of the nails. The head is then lifted and held lifted while the nail-carrier is moved into position to convey nails to the templet-holes. It is then again moved downward by its cams, but not to so great a distance as before, the cams being arranged to move the lower ends of the implements either flush with or slightly above the under surface of the templet. The block is then raised, and, if the heel is to be blind-nailed, is held lifted while the cam for movingthe last and presenting the top lift operates to lower the last to permit the insertion of the top lift and an imperforate plate beneath the templet-plate, when the last is immediately lifted by the cam and toggle and the top li'ft spanked on.

In lieu of cams for reciprocating the head carrying the gang or group of combined awls and drivers, I may use the construction shown in Figs. 3 and 12, which comprises a crank E, connected with a lower cross-head eby means of a pitman e, the end of which is connected with the cross-head by the slotted straps 6 and the lower cross-head is connected by rods e with the upper head carrying a gang or group of implements. To obtain the longer reciprocation necessary for causing the implements to prick the holes in the heel-blank, I insert between the end of the pitman and the upper surface of the lower cross-head a block 6 This block may be moved by hand into position, as described in the Henderson patent, No. 316,894, or it may be automatically moved into position by a cam, as represented in Fig. 3. This mechanism varies from that described in the Henderson patent, in that the pitman is adapted to come in contact with the lower cross-head and move it downward when the block is not interposed, so that the upper head is then moved downward sufliciently to cause the implements to then act as drivers in driving the nails, as the awls are reciprocated first. Upon the start ing of the machine, when the pitman is in its highest position, the cam 6 upon the shaft e moves the block e between the end of the pitman and the upper surface of the crosshead, and upon the first reciprocation the combined awls and drivers are moved downward suificiently far to form or prick the holes in the heel-blank. When the pitman reaches its highest position, the block is moved from between its under surface and the upper surface of the cross-head by the cam c and upon the next downward movement of the pitman its lower end comes in contact with the upper surface of the crosshead, and consequently the throw of both cross-heads is reduced in extent a distance equivalent to the height of the withdrawn block. The block is connected with the slidebar 6 so as to have a vertical movement thereon during the downward and upward movements of the lower cross-head. Iwould not, however, be understood as confining myself to the especial mechanism described for providing the head supporting this gang or group of combined awls and drivers with the variable throw needed for causing the same gang of implements to act. successively as awls and drivers, but may use any equivalent mechanism to that herein described for accomplishing this purpose.

When the form of the invention represented in Fig. 3 is employed and it is desired to attach a top lift without lowering the jackpost after the driving of the nails, the slideblock 6 is constructed substantially as therein representedthat is, instead of being shaped to provide the gang or group of implements with two ranges of movement it provides it with three-first, to the lower limit necessary for pricking the holes in the heel, or to the position represented in Fig. 4; second, to the position represented in Fig. 5, or that to which it is moved to drive the attaching-nails for blind-nailing, and, third, to the position represented in Fig. 6that is, to a position not quite so low as that represented in Fig. 5. This result is obtained by providing the block 6 with a series of surfaces of different heights and by constructing the cam e so as to move the block in relation to the pitman, first, to present the highest surface, then the next lower, and then the lowest surface.

In operation the boot or shoe is placed upon the last or work-support,which is moved into position beneath the templet. The machine is then set in operation,and if it is automatic in its operation the last or work-support is moved upward against the templet to compress the heel-blank. This is immediately followed by the downward movement of the head carrying the gang or group of combined awls and drivers, which then act as awls, and are consequently moved sufficiently to cause their ends to enter the heel-blank to any desired extent to prick it or the holes therein. The gang or group of implements having thus acted as awls are withdrawn, the nail-carrier moved forward to deliver nails to the templet, and the gang or group of instruments are moved downward again, but not so great a distance as before. They then act as drivers, and

are moved to the lower surface of the templet if the heel is to be flush-nailed, and if blindnailed not quite to the lower surface of the templet. If the heel is to be blind-nailed,

the templet is then fed by an imperforate plate below the templet plate, the last or Work-support having been moved downward by the toggle sufficiently to permit this to be done, and it is then moved upward to cause 10 the heel to be moved against the top lift and 2o awls or as drivers mounted on the one end thereof, adapted to be moved alternately or successively to operate in their two capacities, substantially as described.

I 2. In a heel-nailing machine, the combination, with a templet and a last or work-support, between which and the templet the heelblank is compressed, of a head suspended from cams, and thereby provided with a va' riable throw or vertical reciprocation in relation to the templet, and a gang or group'of implements to be used as awls and as drivers mounted on the one end thereof, adapted to be moved alternately or successively to operate in their two capacities, substantially as described.

CHESTER O. SMALL. Witnesses:

F. F. RAYMOND, 2d, J. M. DOLAN, FRED. B. DOLAN. 

